My APK won't build in Distribution

Build for distribution error often with problem of proguard.
from the error message, does this exist?

D:\Programs\NVPACK\android-sdk-windows\tools\ant\build.xml:1147: Z:\HollyblueHolistics (The system cannot find the file specified)

By the way, can you go to the [YourProjectRoot]/Intermediate/Android/APK/

and run “ant release” to see the detail?